EP0384935B1 - Ringkanalgebläse - Google Patents

Ringkanalgebläse Download PDF

Info

Publication number
EP0384935B1
EP0384935B1 EP89103758A EP89103758A EP0384935B1 EP 0384935 B1 EP0384935 B1 EP 0384935B1 EP 89103758 A EP89103758 A EP 89103758A EP 89103758 A EP89103758 A EP 89103758A EP 0384935 B1 EP0384935 B1 EP 0384935B1
Authority
EP
European Patent Office
Prior art keywords
edge
ring channel
boundary
impeller
blower according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP89103758A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0384935A1 (de
Inventor
Rüdiger Galtz
Wolfgang Jentzsch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Webasto SE
Original Assignee
Webasto SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Webasto SE filed Critical Webasto SE
Priority to DE8989103758T priority Critical patent/DE58902713D1/de
Publication of EP0384935A1 publication Critical patent/EP0384935A1/de
Application granted granted Critical
Publication of EP0384935B1 publication Critical patent/EP0384935B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
    • E04D3/02—Roof covering by making use of flat or curved slabs or stiff sheets of plane slabs, slates, or sheets, or in which the cross-section is unimportant
    • E04D3/06—Roof covering by making use of flat or curved slabs or stiff sheets of plane slabs, slates, or sheets, or in which the cross-section is unimportant of glass or other translucent material; Fixing means therefor
    • E04D3/08—Roof covering by making use of flat or curved slabs or stiff sheets of plane slabs, slates, or sheets, or in which the cross-section is unimportant of glass or other translucent material; Fixing means therefor with metal glazing bars
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D23/00—Other rotary non-positive-displacement pumps
    • F04D23/008—Regenerative pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/08—Sealings
    • F04D29/16—Sealings between pressure and suction sides
    • F04D29/161—Sealings between pressure and suction sides especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/663—Sound attenuation
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
    • E04D3/02—Roof covering by making use of flat or curved slabs or stiff sheets of plane slabs, slates, or sheets, or in which the cross-section is unimportant
    • E04D3/06—Roof covering by making use of flat or curved slabs or stiff sheets of plane slabs, slates, or sheets, or in which the cross-section is unimportant of glass or other translucent material; Fixing means therefor
    • E04D3/08—Roof covering by making use of flat or curved slabs or stiff sheets of plane slabs, slates, or sheets, or in which the cross-section is unimportant of glass or other translucent material; Fixing means therefor with metal glazing bars
    • E04D2003/0818—Roof covering by making use of flat or curved slabs or stiff sheets of plane slabs, slates, or sheets, or in which the cross-section is unimportant of glass or other translucent material; Fixing means therefor with metal glazing bars the supporting section of the glazing bar consisting of several parts, e.g. compound sections
    • E04D2003/0837—Sections comprising intermediate parts of insulating material
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
    • E04D3/02—Roof covering by making use of flat or curved slabs or stiff sheets of plane slabs, slates, or sheets, or in which the cross-section is unimportant
    • E04D3/06—Roof covering by making use of flat or curved slabs or stiff sheets of plane slabs, slates, or sheets, or in which the cross-section is unimportant of glass or other translucent material; Fixing means therefor
    • E04D3/08—Roof covering by making use of flat or curved slabs or stiff sheets of plane slabs, slates, or sheets, or in which the cross-section is unimportant of glass or other translucent material; Fixing means therefor with metal glazing bars
    • E04D2003/0868—Mutual connections and details of glazing bars

Definitions

  • the invention relates to an annular duct blower, in particular for conveying combustion air in heaters, such as vehicle heaters, which has the features of the preamble of claim 1.
  • a ring blower or peripheral blower of the type mentioned is known.
  • a blade is provided both at the inlet area and at the outlet area, which is shaped such that its thickness and width gradually decrease from its connection point with the web-shaped interrupter towards its rounded tip.
  • each wing has such a curved course that it almost covers the inlet or outlet opening, the wing starting from a tangent to the outer edge of the impeller via a tip with a turning point in the form of a tangent to the inner edge of the ring channel.
  • the present invention has for its object to provide a ring duct blower of the generic type, the noise emission is reduced as far as possible while largely avoiding a reduction in performance.
  • this object is achieved in a ring duct blower of the type outlined in the preamble of patent claim 1 in connection with the features of its identification.
  • the boundary edge comprises a straight section, starting from the inner edge including an angle of approximately 25 °, a straight section which is tangent to the outer edge of the impeller and a circular arc section connecting these straight sections as a transition section.
  • the boundary edge formed by the web-shaped interrupter at the inlet area is further designed.
  • the boundary edge of the web-shaped interrupter at the inlet area is designed in such a way that, seen in the inflow direction, the ring channel opens gradually both from its inner edge and from its outer edge as the blades of the impeller pass.
  • this means that the boundary edge at the inlet area is formed in such a way that the blade channel, i.e. the space formed between two successive blades of the impeller in the direction of rotation is gradually released both on the inner edge of the impeller and on the outer edge of the impeller, while the area in the middle of the blade edge is still sealed by the interrupter at the inlet area.
  • the boundary edge of the interrupter at the inlet area to the ring channel is preferably designed such that the ring channel extends in the direction of rotation of the impeller, i.e. seen in the inflow direction, opens first on the area facing the inner edge and then on the area facing the outer edge.
  • the blade channel is seen in the direction of rotation of the impeller first in the area of the inner edge and then in the area of the outer edge.
  • the opening difference between the inner edge and the outer edge preferably corresponds to approximately half a blade pitch of the impeller.
  • the design is also such that the ring channel opens completely approximately in the middle between its inner and outer edge, which means that with the Boundary edge at the inlet area of the blade channel is only completely open approximately in the central area of the assigned impeller blade edge.
  • inlet region of the ring channel blower ensures that the air sucked in via the inlet opening gradually flows into the ring channel in order to also reduce the flow noise at the inlet region.
  • the angle enclosed between the facing blade edge of the blades of the impeller and the boundary edge on the inner edge of the ring channel is greater than that included between this blade edge and the boundary edge on the outer edge.
  • the angle enclosed between the boundary edge on the outer edge and the blade edge can amount to approximately 30 °, while the angle included between the boundary edge on the inner edge and the blade edge can lie, for example, in a range up to 75 °, i.e. it should be chosen as large as possible.
  • this boundary edge has a continuously curved course, for example is formed by a circular arc section with a constant radius.
  • the angle enclosed between the boundary edge on the inner edge of the ring channel and the blade edge is preferably approximately 45 °.
  • the design expediently is to be made such that in the event of a discontinuous course of the boundary edge, the boundary curves forming the boundary edge intersect approximately in the middle between the outer and the inner edge of the ring channel, or that this intersection of the boundary curves lies closer to the inner edge than to the outer edge.
  • a housing part 2 'of an annular duct blower 1' is shown in a plan view, and an impeller 3 'is in terms its outline is shown in broken lines, which carries blades 3'a, and which rotates in the direction indicated by the arrow.
  • an approximately semicircular annular channel 4' is provided in cross section.
  • the impeller 3 ' When the impeller 3 'rotates, its blades 3'a work with the annular channel 4' in such a way that the ambient air sucked in via an inlet opening 8 'enters the annular channel 4' via an inlet area 25, in the form of a spiral flow in cooperation with the blades 3'a of the impeller 3 'in the annular channel 4' is compressed and the same is conveyed via the outlet region 26 to an outlet opening 9 '.
  • the outlet opening 9 ' opens in the circumferential direction of the housing part 2', that is, the outlet opening 9 'has, starting from the annular channel 4' in the radial direction.
  • a web-shaped interrupter 16 ' is provided on the impeller 3' facing the side of the annular channel 4 'between the inlet opening 8' and the outlet opening 9 '.
  • This breaker 16 ' has a boundary edge 12' at the outlet region 26 of the ring channel 4 ', which extends from the inner edge 6' of the ring channel 4 'in the region of the outlet opening 9' in the direction of the outer edge 5 'of the ring channel 4'.
  • This boundary edge 12 ' has in the example shown such a course that it includes an angle of about 25 ° on the inner edge 6' of the ring channel 4 'to a facing edge 3'c of the blades 3'a of the impeller 3'.
  • ⁇ designated angle gradually increases until it at the outlet region 26, or in the region of the outlet opening 9', as in connection with the edge of the blade 3'a shown with 3'd of the impeller 3 'illustrates about 90 °.
  • the boundary edge 12 ' is thus formed at the outlet region 26 approximately in the form of a tangent to the outer edge 3'b of the impeller 3'.
  • the angle ⁇ is deviated from the ideal continuous course, for example in the form of a logarithmic spiral, by a tangent section to the inner edge 6 'of the ring channel 4' and a tangent section to the outer edge 3'b of the impeller 3 ', the two tangent sections being approximated corresponding radius or a circular arc section are connected.
  • the web-shaped interrupter 16 ' has at the inlet region 25 of the ring channel blower 1' a boundary 18 '.
  • This boundary edge 18 ' has a continuously curved profile in the example shown and is formed, for example, by an arc section.
  • the boundary edge 18 ' has such a course that it in the inflow direction or in the direction of rotation Impeller 3 '(see arrow) seen from the inner edge 6' of the ring channel 4 'so that it includes an angle ⁇ .
  • the boundary edge 18 ' At the outer edge 5 'of the ring channel 4' ends the boundary edge 18 'such that it includes an angle ⁇ to the outer edge 5'.
  • the angle ⁇ is larger than the angle ⁇ .
  • the angle 5' included on the outer edge 5 'and the angle included on the inner edge 6' is approximately 45 °. Seen in the direction of flow, the central portion of the boundary edge 18 'seen in the inflow direction is convexly curved.
  • a blade edge of the blades 3'a of the impeller 3 ' for example, the position shown with 3'e at the inlet region 25 of the ring duct blower 1' takes, then sucked air into the ring duct 4 'already in the vicinity of the inner edge 6', ie in the area of the angle ⁇ , in a not shown and between two adjacent blades 3'a of the impeller 3 'limited blade channel, which is formed in connection with the annular channel 4'.
  • the blade edge 3'e is still sealed by the web-shaped interrupter 16 ', since the included angle ⁇ is smaller and the blade channel is still covered by the boundary edge 18'.
  • This design of the boundary edge 18 'at the inlet region 25 of the ring duct blower 1' ensures that the air sucked in does not come instantaneously and suddenly into the blade duct or the ring duct 4 ', but seen in the direction of rotation of the impeller 3' (see arrow) first the air near the inner edge 6 ', then near the outer edge 5' and then can occur across the entire channel width.
  • the boundary edge 18 'at the inlet region 25 of the ring channel blower 1' can also have a discontinuous course.
  • the boundary edge 18 'in this case is composed of differently curved partial curves. Cut here the partial curves with different curvatures approximately in the vicinity of the center of the ring channel 4 '. If this is not possible due to the different curvature, the intersection of these differently curved partial curves should be closer to the inner edge 6 'than to the outer edge 5' of the ring channel 4 'in order to achieve that the central region of the ring channel 4' or the full cross section of the Ring channel 4 'is only released last by the blade edge of the respective blade 3'a of the impeller 3'.
  • the angle ⁇ enclosed between the boundary edge 18 'on the inner edge 6' and the blade edge 3'e is chosen to be as large as possible. It can be in a range up to about 75 ° or larger.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP89103758A 1989-03-03 1989-03-03 Ringkanalgebläse Expired - Lifetime EP0384935B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE8989103758T DE58902713D1 (de) 1989-03-03 1989-03-03 Ringkanalgeblaese.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3906852A DE3906852A1 (de) 1989-03-03 1989-03-03 Ringkanalgeblaese

Publications (2)

Publication Number Publication Date
EP0384935A1 EP0384935A1 (de) 1990-09-05
EP0384935B1 true EP0384935B1 (de) 1992-11-11

Family

ID=6375478

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89103758A Expired - Lifetime EP0384935B1 (de) 1989-03-03 1989-03-03 Ringkanalgebläse

Country Status (2)

Country Link
EP (1) EP0384935B1 (enrdf_load_stackoverflow)
DE (1) DE3906852A1 (enrdf_load_stackoverflow)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3406321B2 (ja) * 1996-06-19 2003-05-12 ヨット エーバーシュペッヘル ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディト ゲゼルシャフト 特に、自動車の補助ヒータにおいて燃焼空気を供給するのための側方管路ブロワ
DE19638847C5 (de) * 1996-09-21 2006-01-26 J. Eberspächer GmbH & Co. KG Seitenkanalgebläse, insbesondere für die Verbrennungsluftzuführung bei einem Standheizgerät eines Kraftfahrzeugs
DE19649529A1 (de) * 1996-11-29 1998-06-04 Duerr Dental Gmbh Co Kg Seitenkanalmaschine
DE102004019868A1 (de) * 2004-04-23 2005-11-24 J. Eberspächer GmbH & Co. KG Gebläse, insbesondere Verbrennungsluftgebläse für ein Heizgerät
US9200635B2 (en) 2012-04-05 2015-12-01 Gast Manufacturing, Inc. A Unit Of Idex Corporation Impeller and regenerative blower

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2531740A1 (de) * 1975-07-16 1977-02-03 British Gas Corp Umfangsgeblaese

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1182960C2 (de) * 1962-10-16 1974-01-10 Steitenkanalpumpe mit geraeuschdaempfenden mitteln
DE1703329A1 (de) * 1968-05-02 1972-03-09 Webasto Werk Baier Kg W Seitenkanalgeblaese
DE3446856C2 (de) * 1984-12-21 1987-04-23 Webasto-Werk W. Baier GmbH & Co, 8035 Gauting Seitenkanalgebläse

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2531740A1 (de) * 1975-07-16 1977-02-03 British Gas Corp Umfangsgeblaese

Also Published As

Publication number Publication date
DE3906852A1 (de) 1990-09-06
EP0384935A1 (de) 1990-09-05
DE3906852C2 (enrdf_load_stackoverflow) 1992-06-04

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